Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/25-20 | 265/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.41 (645.5) | 26.26 (667) | 0.85 (21.5) 3.3% |
| Width inches (mm) | 10.83 (275) | 10.43 (265) | -0.39 (-10) -3.6% |
| Circum. inches (mm) | 79.84 (2027.9) | 82.5 (2095.44) | 2.66 (67.54) 3.3% |
| Sidewall Height inches (mm) | 2.71 (68.75) | 3.13 (79.5) | 0.42 (10.75) 15.6% |
| Revolutions per mile (km) | 793.6 (493.12) | 768.02 (477.23) | -25.58 (-15.9) -3.2% |
265/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.67 mph (33.26 km/h) |
| 25 mph (40.23 km/h) | 25.83 mph (41.57 km/h) |
| 30 mph (48.28 km/h) | 31 mph (49.89 km/h) |
| 35 mph (56.33 km/h) | 36.17 mph (58.2 km/h) |
| 40 mph (64.37 km/h) | 41.33 mph (66.52 km/h) |
| 45 mph (72.42 km/h) | 46.5 mph (74.83 km/h) |
| 50 mph (80.47 km/h) | 51.67 mph (83.15 km/h) |
| 55 mph (88.51 km/h) | 56.83 mph (91.46 km/h) |
| 60 mph (96.56 km/h) | 62 mph (99.78 km/h) |
| 65 mph (104.61 km/h) | 67.16 mph (108.09 km/h) |
| 70 mph (112.65 km/h) | 72.33 mph (116.41 km/h) |
| 75 mph (120.7 km/h) | 77.5 mph (124.72 km/h) |
| 80 mph (128.75 km/h) | 82.66 mph (133.04 km/h) |
| 85 mph (136.79 km/h) | 87.83 mph (141.35 km/h) |
| 90 mph (144.84 km/h) | 93 mph (149.67 km/h) |
| 95 mph (152.89 km/h) | 98.16 mph (157.98 km/h) |
| 100 mph (160.93 km/h) | 103.33 mph (166.3 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1954 | 2271 | 2445 | 2553 | 2670 | 2753 | 2844 | 2952 | 3102 | 3252 | 3418 | 3551 | 3792 | 4059 | 4267 | 4400 | 4474 | 4749 | 5132 | 5963 |
Better Fuel Economy Factory Ratios Increased Power
